CN100375449C - Measuring the throughput of transmissions over wireless local area networks - Google Patents
Measuring the throughput of transmissions over wireless local area networks Download PDFInfo
- Publication number
- CN100375449C CN100375449C CNB03809584XA CN03809584A CN100375449C CN 100375449 C CN100375449 C CN 100375449C CN B03809584X A CNB03809584X A CN B03809584XA CN 03809584 A CN03809584 A CN 03809584A CN 100375449 C CN100375449 C CN 100375449C
- Authority
- CN
- China
- Prior art keywords
- access point
- message
- station
- test period
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/06—Testing, supervising or monitoring using simulated traffic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0876—Network utilisation, e.g. volume of load or congestion level
- H04L43/0888—Throughput
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
Abstract
A method and system for measuring the throughput of transmissions over a wireless local area network (Fig. 4) having a station (204) and an access point (202). The station can send messages to the access point during a test period, where the messages can be sent as data frames. The access point can receive messages sent from the station during the test period. For messages received by the access point, the access point can send acknowledgements (406) to the station, where the acknowledgements can be sent as control frames. The station can receive acknowledgements from the access point for messages received by the access point. The station can determine a throughput from the station to the access point for the test period based on the acknowledgements received at the station from the access point during the test period.
Description
Background
1. invention field
Present invention relates in general to WLAN (wireless local area network).More specifically, the present invention relates to measure throughput of transmissions on the net at wireless local.
2. description of Related Art
Traditionally, computer communicates by cable LAN (" LAN ") each other.Yet, along with such as the portable computer growth of requirement to kneetop computer, personal digital assistant or the like, WLAN (wireless local area network) (" WLAN ") developed into computer by utilizing radio signal, infrared signal etc. on wireless medium, to transmit a kind of mode of communication each other.
For promote WLAN each other and and wired lan between interoperability, developed IEEE 802.11 standards as the international standard of WLAN.Usually, IEEE 802.11 standards are to be used for manifesting and the identical interface of IEEE 802 wired lans to the user, allow simultaneously at the wireless medium transmitting data.
Although WLAN provides the mobility of the enhancing on the wired lan to the user, the communication quality on the WLAN may thereby change owing to do not manifest in the wired lan former.For example, all things in the environment all may play the reflector or the attenuator of transmission signals.Like this, the locational little variation of the computer among the WLAN may influence quality of signals and the intensity that is sent by computer, and may influence the throughput that sends signal on WLAN.
In the system of routine, the throughput of striding WLAN is to utilize echo (echo) request-acknowledgement mechanism to be measured by the computer among the WLAN, and described echo request-acknowledgement mechanism has been used the osi layer more than the 3rd layer or the 3rd layer.Yet the assembly among the WLAN often can't be supported the osi layer more than the 3rd layer or the 3rd layer, perhaps be configured to echo reply-request mechanism is not convenient or management is gone up unpractical.In addition, deal with data can increase delay on the 3rd layer, and therefore influences the throughput that calculates.
As selection, can use the self-contained unit that to support the 3rd layer or the osi layer of the mat woven of fine bamboo strips more than 3 layers together with the computer that sends transmission (transmission), so that measure the throughput of striding WLAN.Yet, because described in typical case self-contained unit is to be placed on the access point " back " that receives transmission from computer, so the throughput that calculates may comprise the extra path length between device and the access point, and have at the access point place and to postpone and bottleneck effect.In addition, can increase delay, and therefore influence the throughput that calculates in deal with data more than the 3rd layer or the 3rd layer.
Summary of the invention
The present invention relates to measure throughput of transmissions on the net at wireless local with station and access point.In one embodiment, described station can send message to access point during test period, and wherein said message can be used as Frame and is sent out.Described access point can receive the message from described station during test period.For the message that is received by access point, described access point can send to described station confirms that wherein said affirmation can be sent out as control frame.For the message that is received by access point, described station can be from described access point confirmation of receipt.Described station can determine that slave station is to the throughput of access point in test period according to the affirmation in place, described station from the access point reception during test period.
In another embodiment, during test period, can send message to access point from described station.Then, can be in the message of access point place reception during test period from described station.For the message that is received by access point, described access point can send the ACK frame to described station.For the message that is received by access point, described station can receive the ACK frame from described access point.Described access point can be sending it back described station from the described message that receives that stands there.Described station can receive this message from described access point.Described station can according to during test period by described station from the ACK frame that access point receives there, determine in test period throughput from the described access point of standing.In addition, described station can according to during test period, send to access point from described station and by described station from the message that access point receives there, determine the throughput of in test period, arriving at a station from described access point.
Description of drawings
In conjunction with the drawings with reference to following detailed description, can understand the present invention more thoroughly, can represent with identical numeral with a part in the accompanying drawings.
Fig. 1 shows exemplary OSI seven layer model;
The exemplary extended service that Fig. 2 shows in the WLAN (wireless local area network) (" WLAN ") is provided with;
Fig. 3 is the exemplary process diagram that illustrates the various states at the station among the WLAN;
Fig. 4 shows the exemplary frame sequence that exchanges between station and access point;
Fig. 5 shows and can be used for being provided with the example interface of measuring relevant parameter with demonstration and throughput;
Fig. 6 shows the exemplary process diagram of the process that can be used for measuring the throughput in the wlan system;
Fig. 7 shows the stem that can be included in the frame; With
Fig. 8 shows another exemplary sequence of frame exchange between station and the access point.
Describe in detail
In order to provide more thorough understanding of the present invention, following explanation has been set forth such as many details such as concrete configuration, parameter, examples.Yet, will be recognized that this explanation and be not intended to restriction, but be intended to provide the preferable explanation of exemplary embodiment scope of the present invention.
With reference to Fig. 1, show exemplary OSI seven layer model, its expression is divided into the abstract model of the network system of layer according to its each function.Specifically, described seven layers comprise: corresponding to the 1st layer physical layer 102, corresponding to the 2nd layer data link layer 104, corresponding to the 3rd layer network layer 106, corresponding to the 4th layer transport layer 108, corresponding to the 5th layer conversation layer 110, corresponding to the 6th layer of presentation layer 112 with corresponding to the 7th layer application layer 114.In the osi model each layer all only direct and immediately following it a top one deck or a following one deck carry out alternately, and only in physical layer 102, different computer 100 and 116 is mutual communication directly.Yet different computer 100 and 116 can utilize common protocol to carry out efficient communication on identical layer.For example, in one exemplary embodiment, computer 100 can arrive physical layer 102 up to described frame by transmitting from frame each layer below it of the application layer 114 of computer 100, comes to communicate at application layer 114 and computer 116.Then, described frame can be transferred to the physical layer 102 of computer 116, and transmit, arrive the application layer 114 of computer 116 up to described frame via each layer above the physical layer 102.
IEEE 802.11 standards of WLAN (wireless local area network) (" WLAN ") are at data link layer 104 enterprising line operates, and described data link layer is corresponding to the 2nd layer of aforesaid OSI seven layer model.Because IEEE 802.11 is at 2 layers of enterprising line operate of the mat woven of fine bamboo strips of OSI seven layer model, the layer above the 3rd layer and the 3rd layer can be operated according to the same protocol of using with IEEE 802 wired lans.In addition, the 3rd layer and the layer above it may not know network be actually the 2nd layer still below one deck transmitting data.Therefore, the 3rd layer and above it the layer can in IEEE 802 wired lans and IEEE 802.11WLAN, operate equally.In addition, can present identical interface to the user, and not consider to be to use wired lan or WLAN.
With reference to Fig. 2, described according to IEEE 802.11 standards form WLAN, exemplary extended service with basic service setting (" BSS ") 206,208 and 210 is provided with 200.Each BSS can comprise access point (" AP ") 202 and station 204.Standing 204 is the assemblies that can be used for being connected in WLAN, and described WLAN can be portable, portable, fixed or the like, and can be called network adapter or network interface unit.For example, standing 204 can be kneetop computer, personal digital assistant or the like.In addition, stand 204 can support such as data authentication, remove authentication, the station service maintaining secrecy, transmitting.
Each station 204 can both be via directly communicating by letter with AP 202 such as the aerial connection by transmission radio or infrared signal between WLAN transmitter and receiver.As mentioned above, each AP 202 can both the support station service, and can also support in addition such as association, disassociation, association, distribution, distribution services integrated or the like.Therefore, AP 202 can communicate with station 204 in its BSS 206,208 and 210, and communicates via the AP 202 of the medium 212 that is called dissemination system with other, and described dissemination system forms the maincenter of WLAN.This dissemination system 212 can comprise promptly that wireless connections comprise wired connection again.
With reference to Fig. 2 and 3, must come authentication to be carried out at each station 204 and each station 204 is associated with AP 202 according to IEEE 802.11 standards, so that make each 204 part that become BSS 206,208 or 210 of standing to AP 202.Therefore, with reference to Fig. 3, standing 204 originates in state 1 (300), wherein stand 204 be do not carry out authentication to AP 202 and be not associated with AP 202.In state 1 (300), stand and 204 can only use a limited number of frame type, such as picture can allow to stand 204 location AP 202 and carry out frame type of authentication or the like to AP 202.
204 successfully carry out authentication 306 to AP 202 if stand, and stand so 204 just can be promoted as state 2 (302), wherein carry out authentication to 202 pairs of stations 204 of AP, and stand and 204 be not associated with AP 202.At state 2 (302), stand and 204 can use a limited number of frame type, such as picture 204 frame types that are associated with AP 202 or the like that can allow to stand.
204 successfully are associated with AP 202 or related again then if stand, and stand so 204 just can be promoted as state 3 (304), wherein carry out authentication and will stand 204 being associated with AP 202 to 202 pairs of stations 204 of AP.At state 3 (304), stand 204 can use any frame type come with WLAN in AP 202 and other station 204 communicate.204 receive disassociations and notify 310 if stand, and stand so 204 just can change state 2 into.In addition, 204 receive to remove authentication then and notify 312, stand so and 204 just can change state 1 into if stand.According to IEEE 802.11 standards, can carry out authentication to 202 pairs of stations 204 of different AP simultaneously, but whenever all can only be associated with an AP 202.
Referring again to Fig. 2, in case carried out authentication and will stand 204 being associated with AP 202 to 202 couples of AP station 204, standing 204 just can communicate with another station 204 among the WLAN.Specifically, stand 204 can send to its related AP 202 have source address, message that basic service is provided with home address (" BSSID ") and destination address.Then, AP 202 can be to station 204 dispatch messages that are designated as destination address in message.This destination address can be specified station 204 in the identical BSS 206,208 or 210 that is linked in AP 202 by dissemination system 212 or among another BSS 206,208 or 210.
Although Fig. 2 has described to have the expansion service of three BSS 206,208 and 210 and has been provided with 200, wherein each all comprises three stations 204, but what will be appreciated that is, expansion service is provided with 200 BSS 206,208 and 210 that can comprise any number, and these BSS can both comprise any several point of destination 204.
As previously mentioned, with wired lan by comparison, WLAN can provide the mobility of enhancing to the user, but the quality of communicating by letter on WLAN may be owing to the former thereby variation that does not occur in the wired lan.For example, all things in the environment all may play the reflector or the attenuator of transmission signals, influence the interference of RF signal, multipath, decay or the like therefrom.
With the transmission on the wired lan by comparison, these are not the environmental impacts that typically appears in the wired lan, all may make the reduction of transmission reliability on the WLAN medium.Therefore, IEEE 802.11 standards comprise the various frame exchange agreements in order to the reliability that solves this reduction.Specifically, IEEE 802.11MAC goes up in data link layer 104 (Fig. 1) and uses frame exchange agreement, described data link layer 104 to be used for notifying the station 204 described message that send message to be received by point of destination 204.
Specifically,, carrying out authentication to 202 couples of AP station 204 and will stand 204, stand and 204 can ask (" RTS ") frame 400 to transmission of AP 202 transmissions with after AP 202 is associated with reference to Fig. 4.AP 202 detect from other communication that may disturb the frames that send by station 204, discharged wireless medium after, AP 202 can send a clear to send (" CTS ") frames 402 to station 204.After station 204 received CTS frames 402, stand 204 can be to AP 202 transmission message 404.When AP 202 received this message 404, AP 202 can send to station 204 and confirm (" ACK ") frame 406, has received the message 404 that is sent by station 204 to show AP 202.
204 do not receive the ACK frame if stand, and stand so 204 just can retry to send message 404.In some applications, retry limit can be set, 204 after arriving this limit value, stop to attempt to send message 404 so that stand.204 stop to attempt to send message 404 and not receiving ACK frame 406 if stand, and so just this are regarded as and lose.
According to IEEE 802.11 standards, above-mentioned message is sent as Frame.More specifically, according to present IEEE 802.11 standards, Frame can have the length of at least 29 bytes.On the contrary, RTS, CTS and ACK frame are sent as control frame.According to present IEEE 802.11 standards, control frame has the length of maximum 20 bytes.For example, standard IEEE 802.11ACK frame has the length of 14 bytes.Should be noted in the discussion above that if revise the IEEE802.11 standard these size restrictions to Frame and control frame all may change.
Except in size than Frame littler, control frame is go up to generate in data link layer 104 (Fig. 1) and the layer below it fully.For example, when receiving message,, on data link layer 104 (Fig. 1), automatically generate the ACK frame and send the ACK frame from data link layer 104 at AP 202.Like this, in order to generate and send the ACK frame, need on data link layer 104 (Fig. 1), not handle the message that is received.
Send RTS and CTS frame although above-mentioned frame exchange agreement comprises, what will be appreciated that is that these frames can omit in some applications.Yet, send these frames and can reduce the number of times that between the frame that is sending on the WLAN, conflicts.
Above-mentioned frame exchange agreement can influence the throughput of transmissions on the WLAN, and this is because each frame that sends according to agreement all bandwidth consumed and time.Specifically, use RTS/CTS frame, acknowledgement frame and retry limit can influence throughput.In addition, the size of the message of transmission, the transmission speed that sends message and segmentation (fragmentation) threshold value of message can both influence the throughput of striding WLAN.Therefore, in the process of the communication quality on any fixed time assessment WLAN, it all may be helpful measuring throughput.In addition, in the process of assessment wireless device performance, it also may be helpful measuring the throughput of striding WLAN.
As previously mentioned, striding the throughput of WLAN can utilize echo request-acknowledgement mechanism to measure by station 204, described echo request-acknowledgement mechanism is used such as picture ICMP echo request or UDP echo, they have used the osi layer (Fig. 1) more than the 3rd layer or the 3rd layer, such as network layer 106, transport layer 108, application layer 114 or the like.Specifically, referring again to Fig. 2, standing 204 can send the echo requests to its related AP 202.In response, AP 202 can reply to station 204 transmission echos.Then, can reply according to this echo-request mechanism calculates the throughput of striding WLAN.Yet, utilize this echo request-acknowledgement mechanism to comprise several shortcomings.
For example, echo request-acknowledgement mechanism shortcoming be that echo replys is Frame rather than standard IEEE 802.11 control frames.Like this, be different from the ACK frame, echo is replied on data link layer 104 (Fig. 1) and is generated.Yet the assembly in WLAN supports may not supported the osi layer above the data link layer 104 (Fig. 1).For example, 204 osi layers that may not support more than the 3rd layer or the 3rd layer of standing.The IP address that in addition, station 204 AP 202 that are connected to WLAN can be had the activity on the network enabled layer 106.In addition, AP 202 may not move and can carry out the application that echo is replied-asked.Yet, even stand 204 osi layers that can support more than the 3rd layer or the 3rd layer, at the 3rd layer or can increase delay with the deal with data on upper strata, and the throughput that calculates of influence therefrom.In addition, configuration have echo and reply-station 204 of request mechanism may be not convenient or management is gone up unpractical.
Another shortcoming has related to uses the self-contained unit that can support the osi layer more than the 3rd layer or the 3rd layer.Specifically,, described device can be placed on AP 202 " back ", so that AP 202 is positioned between described device and the station 204 referring again to Fig. 2.Standing 204 can send the echo request to AP202, and described echo request is also received by described device.Then, described device can be replied to station 204 transmission echos.Yet,,, and on AP 202, comprise delay and bottleneck effect so the throughput that calculates may comprise the extra path length between AP202 and the described device because the device that the transmission echo is replied is placed along the wired connection of AP 202 back.In addition, the deal with data on the layer more than the 3rd layer or the 3rd layer can increase delay, and therefore influences the throughput that calculates.
Therefore, various exemplary embodiment of the present invention has used the existing foundation structure that is provided by IEEE 802.11 standards so that calculate the throughput of striding WLAN.More specifically, in various exemplary embodiments, can stride the throughput of WLAN by the existing foundation structure measurement on the osi layer of station 204 utilizations below the 2nd layer or the 2nd layer.
Fig. 6 shows and can be used in the example process of utilizing the system shown in Fig. 4 to measure the throughput in the wlan system.Usually, the throughput of slave station 204 to AP 202 can be measured by bps (bps) according to following equation:
Throughput=((# Frame) * (bit of every Frame))/time
Therefore, throughput can sequentially send Frame to AP 202 by slave station 204 in the time cycle of appointment and measures.If the Frame that sends has known size and has specified the time that is used to send sequence of data frames, so just can according to AP 202 during a specified time the number of successful receiving data frames come calculate throughput.
With reference to Fig. 5, described to be used for to be provided for the example interface of the parameter that throughput measures.More specifically, user, keeper or the like can specify the test period 500 and the frame sign 502 of the frame that will send in proper order during test period.In addition, as top with reference to figure 4 described, user, keeper or the like can specify retry limit 504 and be used to indicate the maximum sized fragmentation threshold 506 that can send Frame under the situation of the Frame that is not segmented into smaller szie.What will be appreciated that is, retry limit 504 and fragmentation threshold 506 can be omitted in some applications, such as when not having retry limit maybe when the Frame that sends has the appointment size that does not need segmentation.
With reference to Fig. 4 and 6, after being provided with the parameter that is used for the throughput measurement, can begin test period then.Next, in step 600, standing 204 can send RTS frames 400 to AP 202.AP 202 detect from other communication that may disturb the frames that send by station 204, discharge wireless medium after, in step 602, AP 202 can send CTS frames 402 to station 204 then.Yet what will be appreciated that is that step 600 and 602 can be omitted in some applications.For example, although transmission CTS and RTS frame can reduce the conflict between the subsequent data frame that sends on the WLAN, if conflict is admissible words then just can omits CTS and RTS frame in specific application.
After station 204 received CTS frames 402, then in step 604, stand 204 can be to AP 202 transmission Frame 404.With reference to Fig. 7, Frame 404 can comprise IEEE 802.11 stems 700 and IEEE 802.2 stems 702.IEEE 802.11 stems 700 can comprise destination address 704, BSSID 706, source address 708 and other information 710.In this exemplary embodiment, destination address 704 can be configured to AP 202, and BSSID 706 can be configured to AP 202, and source address 708 can be configured to stand 204.In addition, IEEE 802.2 stems 702 can comprise source service access point (" SAP ") 712, destination SAP 714 and other information 716.In some configurations, purpose SAP 714 can be configured to sky SAP, in order to avoid 202 pairs of Frames 404 of AP are handled to determine its content.By preventing that AP 202 from handling Frame 404 like this, AP 202 can handle other Frame and reduce the bottleneck and the delay at AP 202 places.Yet what will be appreciated that is can omit in some application: prevent that by destination SAP 71 being arranged to sky SAP4 202 pairs of Frames 404 of AP from handling.For example, if the delay at AP 202 places and bottleneck are unchallenged, so just can omit purpose SAP 714 is arranged to sky SAP address.
If AP 202 receives this Frame 404, AP 202 just can send ACK frame 406 to station 204 so, has received the Frame 404 that is sent by station 204 to show AP 202.Therefore, in step 606,204 receive ACK frames 406 if stand, station 204 can become can be included in frame in the equation of above-mentioned throughput with the ACK frame count in step 608 so.After the ACK frame is counted, can begin to repeat described circulation in step 600 then.
Yet, 204 in fixed time limit, not receiving ACK frame 406 if stand, station 204 just can determine whether to have reached the retry limit 504 (Fig. 5) of appointment in step 610 so.If do not reach retry limit as yet, in step 612, just can count retry so with respect to this limit value.So, can repeating step 604, and can retransmission data frame 404.In step 606, as mentioned above, standing 204 can determine whether to have received ACK frame 406 in the time limit of appointment.
As selection,, in step 614, just can count out LOF so, and begin to repeat described circulation from step 600 if reached the retry limit 504 (Fig. 5) of appointment.
Can run through test period 500 (Fig. 5) repeats as the above-mentioned circulation of describing among Fig. 6.As shown in Figure 5, at the test period end, can show the throughput result to user, keeper etc.More specifically, the ACK digital display that calculates can be shown grouping 508 numbers that receive by AP 202 in step 608 (Fig. 6).This packet count 508 can be used for by removing packet count 508 by grouping/per second calculate throughput 510 with test period 500.In addition, packet count 508 can multiply by frame sign 502 and calculate the total amount of byte 512 that during test period 500 slave station 204 successfully sends to AP 202.According to this total amount of byte 512, and test period 500, can come calculate throughput by kilobytes/per second 514.In addition, can be in the number of retries 516 that calculates counting in step 612 (Fig. 6) during test period 500.As during test period 500 in step 614 (Fig. 6) counting, can also calculate the number 518 of LOF.
Although Fig. 5 has described specific input parameter and display parameters in exemplary configuration, what will be appreciated that is, depends on application, can revise, omits or add various input parameters and display parameters.In addition, depend on application, can dispose input parameter and display parameters by any way.For example, can be added to input parameter to transfer rate 520.More specifically, user, keeper or the like can specify and should use which kind of IEEE 802.11 rates to come transmit data frames 404 on WLAN, and described IEEE 802.11 rates are such as being 1mbps, 2mbps, 5.5mbps, 11mbps or the like.Another example comprises and being presented at during test period according to the fragmentation threshold 506 of appointment and the frame number 404 of segmentation 522.
Fig. 8 has described can be used for measuring another example system and the process of the throughput in the wlan system.As what describe among Fig. 8, present embodiment comprises second Frame 800 and ACK frame 802, and can be used for measuring arrive at a station 204 the throughput from AP 202.
More specifically, with reference to Fig. 6 and 8, after being provided with the parameter that is used for the throughput measurement (Fig. 5), can begin test period.Next, in step 600, standing 204 can send RTS frames 400 to AP 202.AP 202 detect from other communication that may disturb the frames that send by station 204, discharge wireless medium after, AP 202 just can be to station 204 transmission CTS frames 402 in step 602 then.Yet what will be appreciated that is that step 600 and 602 can be omitted in some applications.For example, although transmission CTS and RTS frame can reduce the conflict between the subsequent data frame that sends on the WLAN, if conflict is admissible then can omits CTS and the RTS frame in specific application.
After station 204 received CTS frame 402, station 204 can send first Frame 404 to AP 202 in step 604 then.Referring again to Fig. 7, Frame 404 can comprise IEEE802.11 stem 700.IEEE 802.11 stems 700 can comprise: destination address 704, BSSID 706, source address 708, and other information 710.In this exemplary embodiment, destination address 704 can be configured to stand 204, BSSID 706 can be configured to AP 202, and source address 708 can be configured to stand 204.By arrive at a station 204 destination address 704 of setting, first Frame 404 can slave station 204 advances to AP 202 and advances from AP 202 and arrives at a station 204, create the two-way communication between station 204 and the AP 202 thus, described two-way communication can be more symmetrical more than communicating by letter of creating in the exemplary embodiments of describing with respect to Fig. 4 and 6 in the above.The factor such as the disposal ability of station 204 disposal ability, AP 202, bandwidth or the like is depended in this two-way communication, can influence the throughput of slave station 204 to AP 202 and from arrive at a station 204 throughput of AP 202.
If AP 202 receives this first Frame 404, AP 202 just can send ACK frame 406 to station 204 so, has received the Frame 404 that is sent by station 204 to show AP 202.Next, in step 606, stand and 204 can determine whether it has received ACK frame 406 in fixed time limit.204 receive ACK frame 406 in fixed time limit if stand, and station 204 just can be counted the ACK frame as the frame with respect to the equation of Fig. 4 and the 6 described throughputs that are used for slave station 204 to AP above being included in step 608 so.After having counted the ACK frame, then can be from step 600 beginning repetitive cycling.Although present embodiment comprises ACK frame 406 is counted, what will be appreciated that is that the ACK frame is counted and can be omitted in some applications.For example, if do not measure the throughput of slave station 204 to AP 202, then can omit the ACK frame is counted.
204 do not receive ACK frame 406 in fixed time limit if stand, and station 204 can determine whether to have reached the retry limit 504 (Fig. 5) of appointment in step 610 so.If do not reach retry limit as yet, then in step 612, just can count number of retries with respect to this limit value.Then, can repeating step 604 and can retransmit first Frame 404.In step 606, as mentioned above, standing to determine whether to have received ACK frame 406 in fixed time limit.
As selection,, in step 614, can count and begin to repeat described circulation so LOF in step 600 if reached the retry limit 504 (Fig. 5) of appointment.
As shown in Figure 8, when AP 202 slave stations 204 theres received first Frame 404, AP 202 can send it back first Frame 404 according to the destination address 704 that is provided with in first Frame 404 and arrive at a station 204 as second Frame 800 then.204 receive second Frame 800 if stand, and then standing 204 just can be with second Frame as counting with respect to the frame in Fig. 4 and 6 equatioies of describing above being included in, so that calculating is from arrive at a station 204 throughput of AP 202.In addition, standing 204 can send ACK frames 802 to AP 202 after receiving second Frame 800,204 receive second Frame 800 to show to stand.
Can run through test period 500 and repeat above-mentioned circulation (Fig. 5).As shown in Figure 5, at the end of test period, can show the throughput result to user, keeper or the like.More specifically, can with the counting second Frame number as by the station 204 receptions packet count 508 show.This packet count 508 can be used in by removing packet count 508 with test period 500, comes by grouping/per second 510 calculate throughputs.In addition, packet count 508 can multiply by frame sign 502 and calculates during test period 500 from AP 202 and successfully send 204 the total amount of byte 512 of arriving at a station.According to this total amount of byte 512, and test period, can come calculate throughput by kilobytes/per second 514.In addition, during test period 500, can calculate the number of retries 516 of counting in step 612 (Fig. 6).Can also calculate the number 518 of LOF as during test period 500, counting in step 614 (Fig. 6).
Although Fig. 5 has described specific input parameter and the display parameters in the exemplary configuration, what will be appreciated that is, depends on application, can revise, omits or add various input parameters and display parameters.For example, can also show the number of the ACK frame 406 that receives by station 204, and the throughput of slave station 204 to AP 202.In addition, depend on application, can dispose input parameter and display parameters by any way.
In addition, with respect to above-described exemplary embodiment, input parameter those shown in Fig. 5 and display parameters can both be included in the station 204.As mentioned above, standing 204 can be portable, portable, fixed or the like.For example, standing 204 can be kneetop computer, personal digital assistant or the like.In addition, standing 204 can be used as diagnostic tool by the user, is used as management tool or the like by the keeper, so that the communication quality among the assessment WLAN.
Calculate transmission time or throughput according to above-described exemplary embodiment, compare the advantage that provides with using echo request-acknowledgement mechanism, described echo request-acknowledgement mechanism has been used the 3rd layer or the osi layer of the mat woven of fine bamboo strips more than 3 layers.Specifically, calculate the transmission time or the throughput of striding WLAN by the existing foundation structure of using IEEE 802.11 medium access control (" MAC ") to be provided, the assembly of WLAN need only be supported the 2nd layer osi layer, checked the various shortcomings of utilizing echo request-acknowledgement mechanism thus, described echo request-acknowledgement mechanism has been used the layer more than the 3rd layer or the 3rd layer of osi model.
More specifically, in this exemplary embodiment,, do not need to revise AP 202 and move application in order to allow 204 calculating transmission time or the throughputs of standing.In addition, station 204 AP 202 that are connected to AP 202 are not needed activity on network enabled layer 106 or osi model any more high-rise.In addition, utilize the 2nd layer or its with lower floor on this exemplary embodiment of deal with data, can reduce because of the 3rd layer or its with the upper strata on the delay that causes of deal with data.In addition, not needing to reply-request mechanism to station 204 configuration echos, described echo replys-and it is not convenient or management is gone up unpractical that the request mechanism possible configuration is got up.
In addition, this exemplary embodiment has reduced the needs to the self-contained unit that can support the osi layer more than the 3rd layer or the 3rd layer.Therefore, the throughput that this exemplary embodiment calculates can be recently more accurate from the result of calculation of self-contained unit, this is because this exemplary embodiment does not comprise extra path length between self-contained unit and the AP 202, does not perhaps comprise because of comprising the delay or the bottleneck effect of any increase that this extra path length causes.
In addition, this exemplary embodiment is utilized the existing structure of IEEE 802.11 standards and attendant advantages is provided.By utilizing this existing structure, can under the situation that tip is used, calculate the throughput of WLAN expediently.In addition, because do not revise AP 202, so can use station 204 on all places, to calculate the throughput of WLAN with the various AP 202 of use according to this exemplary embodiment.
Although described the present invention with regard to some embodiment, example and application, those skilled in the art it is evident that: can make various modifications and change in the case of without departing from the present invention.
Claims (76)
1. measure the method for slave station to the throughput of transmissions of access point on the net at wireless local for one kind, described method comprises:
During test period the message slave station is sent to access point, wherein said message sends as Frame;
During test period, on access point, receive message from the station;
Affirmation to the message that received by access point sent from access point arrive at a station, wherein each message that is received by access point is taken as really for control frame to be sent;
On the station, receive affirmation there to the message that receives by access point from access point; And
According in the affirmation that during test period, on the station, receives, determine the throughput of test period there from access point.
2. the method for claim 1, wherein transmission packet is drawn together:
The first message slave station is sent to access point, and
Determine whether on the station, to have received affirmation to first message.
3. method as claimed in claim 2, wherein transmission packet is drawn together:
If the station fails to receive the confirmation and do not reach retry limit as yet from access point, then resend first message there.
4. method as claimed in claim 3 further comprises:
Be the first message count retry that resends.
5. method as claimed in claim 2, wherein transmission packet is drawn together:
If the station fails to receive the confirmation and reached retry limit from access point, then is the first message count LOF there.
6. method as claimed in claim 2, wherein transmission packet is drawn together:
On the station, receive after the affirmation of first message or being the first message count LOF, the second message slave station is sent to access point.
7. the method for claim 1, determine that wherein the throughput of test period further comprises:
According to test period, during test period on the station affirmation number that there receiving from access point and during test period slave station send to the bit number that is comprised each message of access point, determine throughput by bit/per second.
8. the method for claim 1 further comprises:
Before sending each message, a request transmit frame slave station is sent to access point; And
Before sending each message, on the station, receive a clear to send frame there from access point.
9. the method for claim 1, wherein each message all comprises a stem, described stem has the destination address of being arranged to access point, the basic service set identification address BSSID that is arranged to access point and the source address of being arranged to stand.
10. method as claimed in claim 9, wherein each message also comprises the stem with purpose Service Access Point of being arranged to the sky Service Access Point.
11. the method for claim 1 further comprises:
To send by the message that access point receives and arrive at a station;
Receive message at the station from access point;
According to during test period by the station from the message that access point receives, determine the throughput of in test period, arriving at a station from access point.
12. method as claimed in claim 11, determine that wherein the throughput of arriving at a station from access point further comprises in test period: according to test period, the number of the message that on the station, receives from access point during test period and during test period slave station send to the bit number that is comprised each message of access point, come to determine throughput by bit/per second.
13. the method for claim 1 further is included in the station and goes up the determined throughput of demonstration.
14. the method for claim 1 wherein sends Frame and control frame according to 802.11 standards, and wherein is confirmed to be standard 802.11 ACK frames.
15. the method for claim 1, frame and control frame wherein transmit and receive data below the network layer in osi model.
16. measure the method for slave station to the throughput of transmissions of access point on the net at wireless local for one kind, described method comprises:
Send message at the test period slave station to access point, wherein said message sends as Frame;
From the confirmation of receipt of access point there, wherein each message that access point is received is taken as really for control frame and is sent to the station on the station; And
Determine throughput in test period wherein below network layer, to send also receiving data frames and control frame according to the number of the affirmation that receives from access point on the station during test period there according to IEEE 802.11 standards.
17. method as claimed in claim 16, wherein transmission packet is drawn together:
The first message slave station is sent to access point, and
Determine whether on the station, to have received affirmation to first message.
18. method as claimed in claim 17, wherein transmission packet is drawn together:
If described station fails to receive the confirmation and do not reach retry limit as yet from access point, so just resend first message there.
19. method as claimed in claim 18 further comprises:
Be the first message count retry that resends, and
The retry number of during being presented at test period on the station, being counted.
20. method as claimed in claim 17, wherein transmission packet is drawn together:
If described station fails to receive the affirmation of first message there and reached retry limit from access point, is the first message count LOF so.
21. method as claimed in claim 20 further comprises being presented at the LOF number of counting during test period.
22. method as claimed in claim 17, wherein said transmission packet is drawn together:
On the station, receive after the affirmation of first message or being the first message count LOF, the second message slave station is sent to access point.
23. method as claimed in claim 16, determine that wherein the throughput in test period further comprises: according to test period, the number of the affirmation that on the station, there receives during test period from access point and during test period slave station send to the bit number that is comprised each message of access point, come to determine throughput by bit/per second.
24. method as claimed in claim 16 further comprises:
Before sending each message, a request transmit frame slave station is sent to access point; And
Before sending each message, on the station, receive a clear to send frame there from access point.
25. method as claimed in claim 16, wherein each message comprises a stem, and described stem has the destination address of being arranged to access point, the basic service set identification address BSSID that is arranged to access point and the source address of being arranged to stand.
26. method as claimed in claim 25, wherein each message further comprises the stem with purpose Service Access Point of being arranged to the sky Service Access Point.
27. method as claimed in claim 16 further comprises:
Receive message there from access point on the station, wherein said access point arrives at a station described message transmission after receiving message from standing there;
According to the message that during test period, receives from access point, determine the throughput of in test period, arriving at a station there from access point by the station.
28. method as claimed in claim 27, determine that wherein the throughput of arriving at a station from access point further comprises in test period: according to test period, during test period on the station message number that there receives from access point and during test period slave station send to the bit number that is comprised each message of access point, come to determine throughput by bit/per second.
29. method as claimed in claim 16, wherein to have be the length of 29 bytes to Frame at least, and wherein to have be at most the length of 20 bytes to control frame, and wherein confirm to have the length of 14 bytes.
30. one kind in the online method of measuring the throughput of transmissions that arrives at a station from access point of wireless local, described method comprises:
During test period the message slave station is sent to access point, wherein said message sends as Frame;
During test period, in the message of access point place reception from described station;
To send by the message that access point receives and arrive at a station;
On the station, receive message there from access point; And
Send to access point and, determine the throughput in test period there according to slave station during test period by the message of standing and receiving from access point.
31. method as claimed in claim 30, wherein transmission packet is drawn together:
The first message slave station is sent to access point, and
Determine whether to have received on the station acknowledgement frame to first message, wherein when access point received first message, described affirmation sent from access point as control frame and arrives at a station.
32. method as claimed in claim 31, wherein transmission packet is drawn together:
If described station fails to receive the affirmation of first message there and do not reach retry limit as yet from access point, so just resend first message.
33. method as claimed in claim 31, wherein transmission packet is drawn together:
If described station fails to receive the affirmation of first message there and reached retry limit from access point, so just is the first message count LOF.
34. method as claimed in claim 31, wherein said transmission packet is drawn together:
On the station, receive after the affirmation of first message or being the first message count LOF, the second message slave station is sent to access point.
35. method as claimed in claim 30, determine that wherein the throughput in test period further comprises: according to test period, slave station during test period send to access point and the message number that there receives from access point by the station and during test period slave station send to the bit number that is comprised each message of access point, come to determine throughput by bit/per second.
36. method as claimed in claim 30 further comprises:
Before sending each message, a request transmit frame slave station is sent to access point; And
Before sending each message, on the station, receive a clear to send frame there from access point.
37. method as claimed in claim 30, wherein each message comprises a stem, and described stem has the destination address of being arranged to stand, the basic service set identification address BSSID that is arranged to access point and the source address of being arranged to stand.
38. method as claimed in claim 30 further comprises:
On the station, receive affirmation there, wherein each message that is received by access point is taken as really for control frame to send the message that receives by access point from access point;
According to number, determine that slave station is to the throughput of access point in test period there in the affirmation that on the station, receives from access point during test period.
39. method as claimed in claim 30, wherein transmit and receive data frame and control frame are realized below network layer.
40. method as claimed in claim 39,
The frame that wherein transmits and receive data is realized in data link layer, and wherein said data link layer is operated according to IEEE 802.11 standards.
41. measure the method for throughput of transmissions on the net at wireless local for one kind, described WLAN (wireless local area network) has station and access point, described method comprises:
During test period, the message slave station is sent to access point,
During test period, receive from the message of standing at the access point place;
To send from access point the affirmation ACK frame of the message that receives by access point and arrive at a station,
On the station, receive ACK frame there to the message that receives by access point from access point;
To send by the message that access point receives and arrive at a station;
On the station, receive message there from access point;
According to the ACK frame that during test period, receives from access point, determine that slave station is to the throughput of access point in test period there by the station; And
Send to the message of access point and, determine the throughput of in test period, arriving at a station there according to slave station during test period from access point by the message of standing and receiving from access point.
42. method as claimed in claim 41, wherein transmission packet is drawn together:
The first message slave station is sent to access point, and
Determine whether on the station, to have received ACK frame to first message.
43. method as claimed in claim 42, wherein transmission packet is drawn together:
If described station fails to receive the ACK frame of first message there and do not reach retry limit as yet from access point, so just resend first message.
44. method as claimed in claim 42, wherein transmission packet is drawn together:
If described station fails to receive the ACK frame of first message there and reached retry limit from access point, so just is the first message count LOF.
45. method as claimed in claim 42, wherein said transmission packet is drawn together:
On the station, receive the ACK frame of first message or after being the first message count LOF, the second message slave station is sent to access point.
46. method as claimed in claim 41 wherein sends message and ACK frame according to IEEE 802.11 standards.
47. a system that is used for measuring at wireless local throughput of transmissions on the net, described system comprises:
Stand, it be configured to:
Send message to access point during test period, wherein said message sends as Frame,
From access point there confirmation of receipt, wherein said affirmation receives as control frame during test period,
According to the affirmation that during test period, receives, determine the throughput in test period there from access point; And
Access point is configured to it:
From the reception message that stands there, wherein said message receives as Frame,
Send the affirmation of each message that slave station is received to the station, wherein said being confirmed to be sends as control frame.
48. system as claimed in claim 47, wherein will stand further is configured to:
If described station fails to receive the affirmation of message there and do not reach retry limit as yet from access point, so just resend message to access point.
49. system as claimed in claim 48, wherein will stand further is configured to:
Be each the message count retry that resends, and
Be presented at the retry number of counting during test period.
50. system as claimed in claim 47, wherein will stand further is configured to:
When affirmation to the message that sent by the station is failed to receive in described station, and when reached retry limit, count LOF for described message, and
Be presented at the LOF number of counting during test period.
51. system as claimed in claim 47, wherein will stand further is configured to:
Sequentially send message, so that the station is configured to receiving the affirmation of first message of previous transmission or after for the previous first message count LOF that sends, sending second message.
52. system as claimed in claim 47, the station that wherein is configured to determine the throughput in test period further be configured to can: according to test period, the affirmation number that on the station, is there receiving during test period from access point and during test period slave station send to the bit number that is comprised each message of access point, come to determine throughput by bit/per second.
53. system as claimed in claim 47 wherein will stand and further be configured to energy:
Before sending message, a request transmit frame is sent to access point, and
Before sending message, receive a clear to send frame there from access point.
54. system as claimed in claim 53 wherein further is configured to access point energy:
Receive a request transmit frame from standing there, and
The transmission of one clear to send frame is arrived at a station.
55. system as claimed in claim 47, wherein each message comprises a stem, and described stem has the destination address of being arranged to access point, the basic service set identification address BSSID that is arranged to access point and the source address of being arranged to stand.
56. system as claimed in claim 55, wherein each message further comprises the stem with purpose Service Access Point of being arranged to the sky Service Access Point.
57. system as claimed in claim 47 wherein will stand and further be configured to energy:
Receive message there from access point; And
Send an acknowledgement to access point.
58. system as claimed in claim 57 wherein further is configured to access point energy:
After receiving message, send a message to the station from standing there; And
From the confirmation of receipt that stands there.
59. system as claimed in claim 57, wherein will stand further is configured to energy: according to the message number that receives from access point during test period, determine the throughput of arriving at a station from access point there in test period.
60. system as claimed in claim 47, wherein will stand and access point be configured to can be below network layer layer transmit and receive data frame and control frame.
61. system as claimed in claim 47 wherein will stand and access point is configured to can transmit and receive data frame and control frame on data link layer.
62. system as claimed in claim 47, wherein will stand and access point be configured to can be according to IEEE802.11 standard transmit and receive data frame and control frame.
63. system as claimed in claim 47, wherein will stand further is configured to diagnostic tool.
64. as the system that claim 47 reached, wherein will stand further is configured to management tool.
65. a computer-readable recording medium that comprises computer-executable code is used for to measure the throughput of transmissions of slave station to access point on the net at wireless local according to instruction, computer is according to instruction as described in operating as getting off:
During test period the message slave station is sent to access point, wherein said message sends as Frame;
From the confirmation of receipt of access point there, wherein said being confirmed to be sends to the station as the control frame of each message that is received by access point on the station; And
According at the affirmation number that on the station, receives during test period, determine the throughput of test period there from access point.
66. as the described computer-readable recording medium of claim 65, wherein transmission packet is drawn together:
The first message slave station is sent to access point, and
Determine whether on the station, to receive the affirmation of first message.
67. as the described computer-readable recording medium of claim 66, wherein transmission packet is drawn together:
If described station fails to receive the confirmation and do not reach retry limit as yet from access point, so just resend first message there.
68., further comprise as the described computer-readable recording medium of claim 67:
To the first message count retry that resends.
69. as the described computer-readable recording medium of claim 66, wherein transmission packet is drawn together:
If described station fails to receive the affirmation of corresponding first message there and reached retry limit from access point, so just to the first message count LOF.
70. as the described computer-readable recording medium of claim 66, wherein said transmission packet is drawn together:
On the station, receive the affirmation of first message or to the first message count LOF after, the second message slave station is sent to access point.
71. as the described computer-readable medium of claim 65, the throughput of wherein determining test period further comprises: according to test period, the affirmation number that on the station, is there receiving during test period from access point and during test period slave station send to the bit number that is comprised each message of access point, come to determine throughput by bit/per second.
72., further comprise as the described computer-readable medium of claim 65:
Before sending each message, a request transmit frame slave station is sent to access point; And
Before sending each message, on the station, receive a clear to send frame there from access point.
73. as the described computer-readable medium of claim 65, wherein each message comprises a stem, described stem has the destination address of being arranged to access point, the basic service set identification address BSSID that is arranged to access point and the source address of being arranged to stand.
74. as the described computer-readable medium of claim 73, wherein each message further comprises the stem with purpose Service Access Point of being arranged to the sky Service Access Point.
75., further comprise as the described computer-readable medium of claim 65:
Receive message there from access point on the station, wherein access point sends message to the station after receiving message from standing there;
According to the message that during test period, receives from access point, determine the throughput of in test period, arriving at a station there from access point by the station.
76. as the described computer-readable medium of claim 75, determine that wherein the throughput of arriving at a station from access point further comprises in test period: according to test period, during test period on the station message number that there receiving from access point and during test period slave station send to the bit number that is comprised each message of access point, come to determine throughput by bit/per second.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/087,045 US7009957B2 (en) | 2002-02-28 | 2002-02-28 | Measuring the throughput of transmissions over wireless local area networks |
| US10/087,045 | 2002-02-28 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810001286XA Division CN101217423B (en) | 2002-02-28 | 2003-02-25 | Measuring the throughput of transmissions over wireless local area networks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1650177A CN1650177A (en) | 2005-08-03 |
| CN100375449C true CN100375449C (en) | 2008-03-12 |
Family
ID=27753883
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810001286XA Expired - Fee Related CN101217423B (en) | 2002-02-28 | 2003-02-25 | Measuring the throughput of transmissions over wireless local area networks |
| CNB03809584XA Expired - Fee Related CN100375449C (en) | 2002-02-28 | 2003-02-25 | Measuring the throughput of transmissions over wireless local area networks |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810001286XA Expired - Fee Related CN101217423B (en) | 2002-02-28 | 2003-02-25 | Measuring the throughput of transmissions over wireless local area networks |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US7009957B2 (en) |
| EP (1) | EP1478934B1 (en) |
| JP (2) | JP4485804B2 (en) |
| KR (1) | KR100986871B1 (en) |
| CN (2) | CN101217423B (en) |
| AU (1) | AU2003219897A1 (en) |
| CA (1) | CA2476517C (en) |
| WO (1) | WO2003075021A1 (en) |
Families Citing this family (58)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7499460B2 (en) * | 2002-04-26 | 2009-03-03 | Samsung Electronics Co., Ltd. | Integrated WI-FI and wireless public network and method of operation |
| US7453858B2 (en) * | 2002-04-26 | 2008-11-18 | Samsung Electronics Co., Ltd. | Apparatus and method for adapting WI-FI access point to wireless backhaul link of a wireless network |
| US20030206532A1 (en) * | 2002-05-06 | 2003-11-06 | Extricom Ltd. | Collaboration between wireless lan access points |
| US7058796B2 (en) | 2002-05-20 | 2006-06-06 | Airdefense, Inc. | Method and system for actively defending a wireless LAN against attacks |
| US7532895B2 (en) * | 2002-05-20 | 2009-05-12 | Air Defense, Inc. | Systems and methods for adaptive location tracking |
| US7277404B2 (en) * | 2002-05-20 | 2007-10-02 | Airdefense, Inc. | System and method for sensing wireless LAN activity |
| US7742443B2 (en) * | 2002-05-28 | 2010-06-22 | Maarten Menzo Wentink | Transmit power management in shared-communications channel networks |
| SE526137C2 (en) * | 2003-01-28 | 2005-07-12 | Sandvik Ab | Tool coupling for rotating tools with radial joints |
| US7355996B2 (en) * | 2004-02-06 | 2008-04-08 | Airdefense, Inc. | Systems and methods for adaptive monitoring with bandwidth constraints |
| US7274740B2 (en) | 2003-06-25 | 2007-09-25 | Sharp Laboratories Of America, Inc. | Wireless video transmission system |
| US7257107B2 (en) | 2003-07-15 | 2007-08-14 | Highwall Technologies, Llc | Device and method for detecting unauthorized, “rogue” wireless LAN access points |
| US20050068891A1 (en) * | 2003-09-25 | 2005-03-31 | Arsikere Amarnath R. | Method and apparatus for network throughput measurement |
| US9325998B2 (en) | 2003-09-30 | 2016-04-26 | Sharp Laboratories Of America, Inc. | Wireless video transmission system |
| CN100396037C (en) * | 2003-10-28 | 2008-06-18 | 华为技术有限公司 | Method for transmitting acknowledged frame in wireless LAN |
| US20050239411A1 (en) * | 2004-03-31 | 2005-10-27 | Hazra Mousumi M | Method and apparatus to distribute statistics in a wireless communication network |
| US8196199B2 (en) | 2004-10-19 | 2012-06-05 | Airdefense, Inc. | Personal wireless monitoring agent |
| TW200705901A (en) * | 2005-06-09 | 2007-02-01 | Samsung Electronics Co Ltd | Method and apparatus for receiving data with down compatibility in high throughput wireless network |
| US8171127B2 (en) * | 2005-10-07 | 2012-05-01 | Citrix Systems, Inc. | Systems and methods for response monitoring |
| EP1958376B1 (en) * | 2005-12-05 | 2016-10-26 | Telefonaktiebolaget LM Ericsson (publ) | A wireless station and method in a wireless station for initiating resource measuremets |
| US9544602B2 (en) | 2005-12-30 | 2017-01-10 | Sharp Laboratories Of America, Inc. | Wireless video transmission system |
| US7715800B2 (en) | 2006-01-13 | 2010-05-11 | Airdefense, Inc. | Systems and methods for wireless intrusion detection using spectral analysis |
| US7971251B2 (en) | 2006-03-17 | 2011-06-28 | Airdefense, Inc. | Systems and methods for wireless security using distributed collaboration of wireless clients |
| US7970013B2 (en) | 2006-06-16 | 2011-06-28 | Airdefense, Inc. | Systems and methods for wireless network content filtering |
| JP2008022453A (en) * | 2006-07-14 | 2008-01-31 | Seiko Epson Corp | Radio transmitting apparatus, radio transmitting/receiving system, control method for radio transmitting apparatus, and program |
| US7672669B2 (en) * | 2006-07-18 | 2010-03-02 | Veriwave, Inc. | Method and apparatus for controllable simulation of mobility |
| US8281392B2 (en) | 2006-08-11 | 2012-10-02 | Airdefense, Inc. | Methods and systems for wired equivalent privacy and Wi-Fi protected access protection |
| US8861597B2 (en) | 2006-09-18 | 2014-10-14 | Sharp Laboratories Of America, Inc. | Distributed channel time allocation for video streaming over wireless networks |
| US7978619B2 (en) * | 2006-11-16 | 2011-07-12 | Vocera Communications, Inc. | Application specific, network performance measurement system and method for applications |
| US8705375B2 (en) * | 2007-05-24 | 2014-04-22 | Nokia Corporation | Power save protocol interoperability detection |
| US8638806B2 (en) | 2007-05-25 | 2014-01-28 | Hand Held Products, Inc. | Wireless mesh point portable data terminal |
| US8908700B2 (en) | 2007-09-07 | 2014-12-09 | Citrix Systems, Inc. | Systems and methods for bridging a WAN accelerator with a security gateway |
| CN101146046B (en) * | 2007-11-05 | 2010-06-02 | 福建星网锐捷网络有限公司 | A throughput testing method and testing system |
| US20100008377A1 (en) * | 2008-07-08 | 2010-01-14 | International Business Machines Corporation | Queue management based on message age |
| CN101867467B (en) * | 2009-04-20 | 2013-04-10 | 电信科学技术研究院 | Method and device for feeding back hybrid automatic repeat request (HARQ) acknowledgement message in carrier aggregation system |
| US8671332B2 (en) * | 2009-04-30 | 2014-03-11 | The Johns Hopkins University | Systems and methods for a rateless round robin protocol for adaptive error control |
| US8694624B2 (en) * | 2009-05-19 | 2014-04-08 | Symbol Technologies, Inc. | Systems and methods for concurrent wireless local area network access and sensing |
| ES2642097T3 (en) * | 2009-11-13 | 2017-11-15 | Orange | Procedure for resting at least one component of an entity of a corresponding communication network, device and computer program |
| EP2676471B1 (en) * | 2011-02-14 | 2014-11-05 | Thomson Licensing | Troubleshooting wi-fi connectivity by measuring the round trip time of packets sent with different modulation rates |
| US9716659B2 (en) | 2011-03-23 | 2017-07-25 | Hughes Network Systems, Llc | System and method for providing improved quality of service over broadband networks |
| US10637782B2 (en) | 2011-03-23 | 2020-04-28 | Hughes Network Systems, Llc | System and method for policy-based multipath WAN transports for improved quality of service over broadband networks |
| US9240950B2 (en) * | 2011-03-23 | 2016-01-19 | Hughes Network Systems, Llc | System and method for providing quality of service over dedicated local loop networks |
| KR20120117575A (en) * | 2011-04-15 | 2012-10-24 | 주식회사 케이티 | Wireless access point apparatus and method for testing sensitivity of received signal |
| US8489679B2 (en) | 2011-08-16 | 2013-07-16 | Fluke Corporation | Method and apparatus for monitoring network traffic and determining the timing associated with an application |
| EP2642783A1 (en) * | 2012-03-19 | 2013-09-25 | Thomson Licensing | Method for testing a wireless communications network including a station and an access point |
| EP2873195B8 (en) | 2012-07-13 | 2019-04-24 | Assia Spe, Llc | Method and system for performance measurement of a communication link |
| CN102904772A (en) * | 2012-09-26 | 2013-01-30 | 中兴通讯股份有限公司 | Method and device for realizing throughput test of network equipment |
| US9491795B2 (en) * | 2012-12-19 | 2016-11-08 | Gainspan Corporation | Extended connectivity based on wireless paths between stations of a wireless local area network (WLAN) |
| CN103338475B (en) * | 2013-06-09 | 2015-11-25 | 福建星网锐捷网络有限公司 | The method of testing of WAP (wireless access point) and device, test terminal |
| CN103619041A (en) * | 2013-12-13 | 2014-03-05 | 南京智微亚通信科技有限公司 | Method for testing handling capacity of CPE (customer premises equipment) |
| WO2015125053A1 (en) * | 2014-02-21 | 2015-08-27 | Telefonaktiebolaget L M Ericsson (Publ) | Wlan throughput prediction |
| EP2919508A1 (en) * | 2014-03-10 | 2015-09-16 | Rohde & Schwarz Asia Pte. Ltd. | Method and test system for testing wireless LAN devices |
| SG10201400508TA (en) | 2014-03-10 | 2015-10-29 | Rohde & Schwarz Asia Pte Ltd | Method and test system for testing wireless lan devices |
| WO2015145169A1 (en) * | 2014-03-28 | 2015-10-01 | British Telecommunications Public Limited Company | Wlan access point which approves internet access only if quality of the radio link is sufficiently good |
| CN106416135B (en) | 2014-03-31 | 2019-12-06 | 英国电讯有限公司 | Method and apparatus for monitoring performance of multiple wireless networks |
| CN106027333A (en) * | 2016-06-30 | 2016-10-12 | 南昌大学 | Module for realizing throughput analysis and bit error rate test in industrial sensor network |
| CN111480319B (en) * | 2017-10-20 | 2023-08-11 | 上海诺基亚贝尔股份有限公司 | Throughput testing |
| US11337077B2 (en) | 2018-03-29 | 2022-05-17 | British Telecommunications Public Limited Company | Method of channel selection in a wireless network |
| US11751080B2 (en) | 2019-12-19 | 2023-09-05 | British Telecommunications Public Limited Company | Wireless network access point and method for operation thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1236240A (en) * | 1998-02-09 | 1999-11-24 | 日本电气株式会社 | Asynchronous transmission mode communication device its control method and recording medium thereof |
| US6031883A (en) * | 1992-05-08 | 2000-02-29 | Sanconix, Inc. | Enhanced frequency agile radio |
| US6076114A (en) * | 1997-04-18 | 2000-06-13 | International Business Machines Corporation | Methods, systems and computer program products for reliable data transmission over communications networks |
| US6266360B1 (en) * | 1997-02-17 | 2001-07-24 | Sharp Kabushiki Kaisha | Direct-spread-spectrum communication system |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5245616A (en) * | 1989-02-24 | 1993-09-14 | Rosemount Inc. | Technique for acknowledging packets |
| GB9223890D0 (en) * | 1992-11-13 | 1993-01-06 | Ncr Int Inc | Wireless local area network system |
| US5436905A (en) * | 1994-05-16 | 1995-07-25 | Industrial Technology Research Institute | Group randomly addressed polling MAC protocol for wireless data |
| JP3231575B2 (en) * | 1995-04-18 | 2001-11-26 | 三菱電機株式会社 | Wireless data transmission equipment |
| US5844905A (en) * | 1996-07-09 | 1998-12-01 | International Business Machines Corporation | Extensions to distributed MAC protocols with collision avoidance using RTS/CTS exchange |
| US6031833A (en) | 1997-05-01 | 2000-02-29 | Apple Computer, Inc. | Method and system for increasing throughput in a wireless local area network |
| US6629151B1 (en) * | 1999-03-18 | 2003-09-30 | Microsoft Corporation | Method and system for querying the dynamic aspects of wireless connection |
| US20010040895A1 (en) * | 2000-03-16 | 2001-11-15 | Templin Fred Lambert | An IPv6-IPv4 compatibility aggregatable global unicast address format for incremental deployment of IPv6 nodes within IPv4 |
| US7006447B1 (en) * | 2000-04-27 | 2006-02-28 | Nokia Mobile Phones Ltd. | Apparatus, and associated method, for measuring radio operating characteristics of a radio device |
| US6907005B1 (en) * | 2000-07-24 | 2005-06-14 | Telefonaktiebolaget L M Ericsson (Publ) | Flexible ARQ for packet data transmission |
| FI112150B (en) * | 2000-07-24 | 2003-10-31 | Stonesoft Oyj | Communication control method |
| US20020089959A1 (en) * | 2001-01-11 | 2002-07-11 | Fischer Michael A. | System and method for providing a selectable retry strategy for frame-based communications |
| US7519030B2 (en) * | 2001-11-19 | 2009-04-14 | At&T Intellectual Property Ii, L.P. | Adaptive MAC fragmentation and rate selection for 802.11 wireless networks |
| US6839336B2 (en) * | 2002-04-29 | 2005-01-04 | Qualcomm, Incorporated | Acknowledging broadcast transmissions |
| US20040037257A1 (en) * | 2002-08-23 | 2004-02-26 | Koninklijke Philips Electronics N.V. | Method and apparatus for assuring quality of service in wireless local area networks |
-
2002
- 2002-02-28 US US10/087,045 patent/US7009957B2/en not_active Expired - Fee Related
-
2003
- 2003-02-25 AU AU2003219897A patent/AU2003219897A1/en not_active Abandoned
- 2003-02-25 JP JP2003573429A patent/JP4485804B2/en not_active Expired - Fee Related
- 2003-02-25 KR KR1020047013270A patent/KR100986871B1/en not_active IP Right Cessation
- 2003-02-25 CA CA2476517A patent/CA2476517C/en not_active Expired - Fee Related
- 2003-02-25 CN CN200810001286XA patent/CN101217423B/en not_active Expired - Fee Related
- 2003-02-25 WO PCT/US2003/005774 patent/WO2003075021A1/en active Application Filing
- 2003-02-25 EP EP03716181A patent/EP1478934B1/en not_active Expired - Lifetime
- 2003-02-25 CN CNB03809584XA patent/CN100375449C/en not_active Expired - Fee Related
-
2006
- 2006-01-13 US US11/331,488 patent/US7292562B2/en not_active Expired - Fee Related
-
2008
- 2008-11-19 JP JP2008296169A patent/JP4486147B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6031883A (en) * | 1992-05-08 | 2000-02-29 | Sanconix, Inc. | Enhanced frequency agile radio |
| US6266360B1 (en) * | 1997-02-17 | 2001-07-24 | Sharp Kabushiki Kaisha | Direct-spread-spectrum communication system |
| US6076114A (en) * | 1997-04-18 | 2000-06-13 | International Business Machines Corporation | Methods, systems and computer program products for reliable data transmission over communications networks |
| CN1236240A (en) * | 1998-02-09 | 1999-11-24 | 日本电气株式会社 | Asynchronous transmission mode communication device its control method and recording medium thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2476517A1 (en) | 2003-09-12 |
| JP2005519503A (en) | 2005-06-30 |
| AU2003219897A1 (en) | 2003-09-16 |
| US7292562B2 (en) | 2007-11-06 |
| JP2009089415A (en) | 2009-04-23 |
| KR100986871B1 (en) | 2010-10-08 |
| KR20040102016A (en) | 2004-12-03 |
| EP1478934A4 (en) | 2007-08-29 |
| US7009957B2 (en) | 2006-03-07 |
| JP4485804B2 (en) | 2010-06-23 |
| CA2476517C (en) | 2012-11-27 |
| JP4486147B2 (en) | 2010-06-23 |
| CN1650177A (en) | 2005-08-03 |
| CN101217423B (en) | 2011-12-14 |
| CN101217423A (en) | 2008-07-09 |
| US20030161341A1 (en) | 2003-08-28 |
| US20060114875A1 (en) | 2006-06-01 |
| EP1478934A1 (en) | 2004-11-24 |
| WO2003075021A1 (en) | 2003-09-12 |
| EP1478934B1 (en) | 2012-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100375449C (en) | Measuring the throughput of transmissions over wireless local area networks | |
| KR100972476B1 (en) | Detecting a hidden node in a wireless local area network | |
| US9686049B2 (en) | Method and system for Bluetooth (BT) delayed acknowledgement (ACK) | |
| TWI433393B (en) | Method and apparatus for antenna selection in wireless communications | |
| US7953022B2 (en) | Method and apparatus of controlling transmission of data block | |
| KR100842586B1 (en) | METHOD FOR TRANSMITTING OF AGGREGATED MAC MPDUs IN WIRELESS TELECOMMUNICATION SYSTEM AND THEREFOR SYSTEM | |
| KR101668768B1 (en) | Systems and methods for packet relaying | |
| KR20220106739A (en) | Data retransmission method and apparatus, data reception response method and apparatus, and storage medium | |
| US9210055B2 (en) | Device and method for computation of channel loss rate and collision loss rate of communication link(s) in a random access network | |
| RU2577336C2 (en) | TROUBLESHOOTING Wi-Fi CONNECTIVITY BY MEASURING ROUND TRIP TIME OF PACKETS SENT WITH DIFFERENT MODULATION RATES | |
| CN101010913A (en) | Method and system for acknowledging the receipt of a transmitted data stream in a wireless personal area network | |
| US20090067358A1 (en) | Method and System for Multicast Retry in a Communication Network | |
| AU2008255253A1 (en) | Method for Sending an Acknowledgement to An Ingress Mesh Point in a Mesh Network and a Medium Access Control Frame Format | |
| JP6738925B2 (en) | Wireless communication system, communication method, and portable transceiver | |
| JP2003037606A (en) | Device and method for radio communication | |
| CN100471197C (en) | Method of efficiently transmitting/receiving data using transport layer in a mobile ad hoc network, and network device using the method | |
| JP2006140752A (en) | Wireless position detecting system, its server, its base station, and its terminal | |
| Abu-Sharkh et al. | The impact of multi-rate operation on A-MSDU, A-MPDU and block acknowledgment in greenfield IEEE802. 11n wireless LANs | |
| KR20090090669A (en) | Apparatus and method of pass-through medium access control for broken or low rate links in wireless lans | |
| Khan et al. | A survey of rate-adaptation schemes for ieee 802.11 compliant WLANs | |
| CN106464451B (en) | Method and apparatus for combining the frame in WLAN | |
| Azami | Cooperative retransmission implementation in ns 2 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20130225 |